Device for the automatic single feeding of ring shaped blanks to working points



Sept. 27, 1932.

B. FQRSTER DEVICE FOR THE AUTOMATIC SINGLE FEEDING OF RING SHAPED BLANKS TO WORKING POINTS Filed Dec. 23. 1950 2 Sheets-Sheet 1 Sept. 27, 1932. FQRSTER 1,879,156

E FOR THE AU DEVIC T TIC SINGLE FEEDING 0F RING SHAPED BLA TO WORKING POINTS Filed Dec. 23. 1930 2 shee'Es-Sheex 2 Patented Sept. 27, 1932 UNITED STATES QA NT'QFF T BEBNHARD FtjRSTER, OF PI ORZHEEIM, GERMANY DEVICE FOR THE AUTOMATIC SINGLE FEEDING orRING' SHAPED BLANKs To WORKING POINTS v 7 Application filed December 23, 1930, Serial No. 504,319, and in Germany September 9,

The feeding one by one of small, ring shaped blanks, such as for instance guide sleeves for snap rings, to working points is connected with serious difficulties, if it has to be effected automatically from a container.

The devices of known type do not work.

satisfactorily enough. With the devices of known type it is impossible to drop the blanks one by one in rapid succession through a CllS- charging aperture of the container in which they are lying pell-mell. A further inconvenience connected with rings with vcut out portions, such as the ring sleeves for snap rings, is that the rings hook the one in the other and have to be separated for discharg- 111. I

The conveying of the snap ring sleeves on a catch pin which projects into the discharging aperture is also difficult, if the sleeves have to drop off the catch pin properly ad usted that is the cut out portion in the rings registering accurately. It has been proposed to arrange for this purpose a bar, the thickness of which corresponds approximately to the size of the cut out portion of the rings, along the catch pin and to make a brush rotate at the upper end of the bar for turning the sleeves until the cut out portion of the sleeve registers with the top end of the bar, the threading of the sleeves on the bar by means of a rotating brush requiring however often too much time.

This invention has for its object to rapidly and securely feed ring shaped blanks to a working point.

The novelty consists in that a brush moves over the discharging hole of a funnel shaped container filled with the blanks.

By wiping the bottom of the container by means of a brush the blanks hooked the one in the other, which rest on the bottom, are separated and pushed into the discharging hole under a slight pressure of the brush when it passes over this hole.

A further feature of the invention is that at the top end of the bar a penduling brush is arranged instead of a rotating brush. The snap ring sleeves are more rapidly threaded on the bar by this penduling brush.

, pushed An embodiment of the invention is illustrated by way of example on the accompanying drawings in which:'

Fig. 1 shows the-device in elevation.-

Fig. 2 is a topplan view of'Fig;31.

Fig. 3 is a side elevation in cross-section on line 33 of Fig. 2." j l Above the discharge hole a of the funnel b a brush 0 is arranged,the .br'istlesyof which touch the bottom of the funnel or move just over the same. The brush 0 is overhung on av shaftd but carries out the same movements as this shaft. The shaftdis j'ournaledin a-sleeve e which has a spiral shaped slot 7, in which a stud g fixed on shaft d isguided. The brush 0 is driven by a cam disc it against which bears the rear end of'shaft 0?. At one rotation of the' cam disc k the brush 0 makes one forward movement and one backward movement, i. e. -a complete stroke, during which it carries out a complete penduling movement. These two brush movements, the resultant of which represents a helical movement, cause the blanks lying on the bottom of V discharging hole a, the diameter of this catch pin corresponding to the inner width ofv the blanks. The discharging hole a is therefore ring shaped- The catch pin 2' extends preferably to the plane of the funnel bottom. On

the catch pint a longitudinal bar is is arand to be brushed into the ranged, designed in known manner for adj usting the blanks if they have a cutout portion as in the case of snap ring sleeves. Near the top end of bar is a brush m is arranged,

which carries out a penduling movement.

This brush m is driven from a cam disc at 7' preferably mounted on the rotatable shaft 0 which also carries the cam disc 72,. The rotations of cam disc n are transformed by means of a two armed lever p into penduling movements transmitted upon the tap r shaft 9 on which also the brush mis mounted. he snap rlng sleeves wh1ch have been onto the catch pin 2 rest-upon the upper end of bar 70, and they are adjusted With their cut out portion and pushed onto the bar 71: by the penduling brush m mostly already at the first oscillation of said brush. The adjusted snap ring sleeves slide down on the catch pin and bar towards a working point or towards any other point of destination.

The device can be used also for feeding closed rings in a similar reliable manner, and in this case a tube is substituted for the catch pin, in which tube the rings slip down.

I claim a 1. A device for singly automatically feeding ring-shaped blanks, such as guide sleeves for spring rings from a storage container by means of a brush to the working points, comprising in combination with the container having a discharge aperture and the brush arranged over the discharge aperture of said container, means for imparting to said brush an oscillating and also a sliding movement in the direction of the axis of oscillation so that said brushcarries out a helical movement.

. 2. A device for singly automatically feeding ring-shaped blanks having a cut out portion, comprising in combination a container having a discharge aperture, a brush in said container above said! aperture, means for imparting a helical movement to said brush, a catch pin extending from below into said discharge aperture, a longitudinal bar on 7 said catch pin adapted to hold the blanks dropping out of said discharge aperture, a brush near the top end of said bar, and means for imparting an oscillating movement to said brush near said bar.

In testimony whereof I afiix my signature.

BERNHARD F'o'RsTER. 

